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FolderBrowserDialog.ShowNewFolderButton Property

Gets or sets a value indicating whether the New Folder button appears in the folder browser dialog box.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

[LocalizableAttribute(false)] 
public bool ShowNewFolderButton { get; set; }
/** @property */
public boolean get_ShowNewFolderButton ()

/** @property */
public void set_ShowNewFolderButton (boolean value)

public function get ShowNewFolderButton () : boolean

public function set ShowNewFolderButton (value : boolean)

Property Value

true if the New Folder button is shown in the dialog box; otherwise, false. The default is true.

When ShowNewFolderButton is true, the New Folder button is visible, giving the user a chance to create a folder. When the user clicks the New Folder button, a new folder is created and the user is prompted to specify the folder name. The selected node in the tree becomes the parent of the new folder. The actual caption of the New Folder button can vary depending upon the operating system

NoteImportant:

Setting ShowNewFolderButton to false does not work on Windows 2000.

// The following example displays an application that provides the ability to 
// open rich text files (rtf) into the RichTextBox. The example demonstrates 
// using the FolderBrowserDialog to set the default directory for opening files.
// The OpenFileDialog class is used to open the file.
using System;
using System.Drawing;
using System.Windows.Forms;
using System.IO;

public class FolderBrowserDialogExampleForm : System.Windows.Forms.Form
{
    private FolderBrowserDialog folderBrowserDialog1;
    private OpenFileDialog openFileDialog1;
    
    private RichTextBox richTextBox1;

    private MainMenu mainMenu1;
    private MenuItem fileMenuItem, openMenuItem;
    private MenuItem folderMenuItem, closeMenuItem;
    
    private string openFileName, folderName;

    private bool fileOpened = false;

    // The main entry point for the application.
    static void Main() 
    {
        Application.Run(new FolderBrowserDialogExampleForm());
    }


    // Constructor.
    public FolderBrowserDialogExampleForm()
    {
        this.mainMenu1 = new System.Windows.Forms.MainMenu();
        this.fileMenuItem = new System.Windows.Forms.MenuItem();
        this.openMenuItem = new System.Windows.Forms.MenuItem();
        this.folderMenuItem = new System.Windows.Forms.MenuItem();
        this.closeMenuItem = new System.Windows.Forms.MenuItem();

        this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
        this.folderBrowserDialog1 = new System.Windows.Forms.FolderBrowserDialog();
        this.richTextBox1 = new System.Windows.Forms.RichTextBox();

        this.mainMenu1.MenuItems.Add(this.fileMenuItem);
        this.fileMenuItem.MenuItems.AddRange(
                            new System.Windows.Forms.MenuItem[] {this.openMenuItem,
                                                                 this.closeMenuItem,
                                                                 this.folderMenuItem});
        this.fileMenuItem.Text = "File";

        this.openMenuItem.Text = "Open...";
        this.openMenuItem.Click += new System.EventHandler(this.openMenuItem_Click);

        this.folderMenuItem.Text = "Select Directory...";
        this.folderMenuItem.Click += new System.EventHandler(this.folderMenuItem_Click);

        this.closeMenuItem.Text = "Close";
        this.closeMenuItem.Click += new System.EventHandler(this.closeMenuItem_Click);
        this.closeMenuItem.Enabled = false;

        this.openFileDialog1.DefaultExt = "rtf";
        this.openFileDialog1.Filter = "rtf files (*.rtf)|*.rtf";

        // Set the help text description for the FolderBrowserDialog.
        this.folderBrowserDialog1.Description = 
            "Select the directory that you want to use as the default.";

        // Do not allow the user to create new files via the FolderBrowserDialog.
        this.folderBrowserDialog1.ShowNewFolderButton = false;

        // Default to the My Documents folder.
        this.folderBrowserDialog1.RootFolder = Environment.SpecialFolder.Personal;

        this.richTextBox1.AcceptsTab = true;
        this.richTextBox1.Location = new System.Drawing.Point(8, 8);
        this.richTextBox1.Size = new System.Drawing.Size(280, 344);
        this.richTextBox1.Anchor = AnchorStyles.Top | AnchorStyles.Left | 
                                   AnchorStyles.Bottom | AnchorStyles.Right;

        this.ClientSize = new System.Drawing.Size(296, 360);
        this.Controls.Add(this.richTextBox1);
        this.Menu = this.mainMenu1;
        this.Text = "RTF Document Browser";
    }

    // Bring up a dialog to open a file.
    private void openMenuItem_Click(object sender, System.EventArgs e)
    {
        // If a file is not opened, then set the initial directory to the
        // FolderBrowserDialog.SelectedPath value.
        if (!fileOpened) {
            openFileDialog1.InitialDirectory = folderBrowserDialog1.SelectedPath;
            openFileDialog1.FileName = null;
        }

        // Display the openFile dialog.
        DialogResult result = openFileDialog1.ShowDialog();

        // OK button was pressed.
        if(result == DialogResult.OK) 
        {
            openFileName = openFileDialog1.FileName;
            try
            {
                // Output the requested file in richTextBox1.
                Stream s = openFileDialog1.OpenFile();
                richTextBox1.LoadFile(s, RichTextBoxStreamType.RichText);
                s.Close();    
            
                fileOpened = true;

            } 
            catch(Exception exp)
            {
                MessageBox.Show("An error occurred while attempting to load the file. The error is:" 
                                + System.Environment.NewLine + exp.ToString() + System.Environment.NewLine);
                fileOpened = false;
            }
            Invalidate();

            closeMenuItem.Enabled = fileOpened;
        }

        // Cancel button was pressed.
        else if(result == DialogResult.Cancel) 
        {
            return;
        }
    }


    // Close the current file.
    private void closeMenuItem_Click(object sender, System.EventArgs e)
    {
        richTextBox1.Text = "";
        fileOpened = false;

        closeMenuItem.Enabled = false;
    }


    // Bring up a dialog to chose a folder path in which to open or save a file.
    private void folderMenuItem_Click(object sender, System.EventArgs e)
    {
        // Show the FolderBrowserDialog.
        DialogResult result = folderBrowserDialog1.ShowDialog();
        if( result == DialogResult.OK )
        {
            folderName = folderBrowserDialog1.SelectedPath;
            if(!fileOpened)
            {
                // No file is opened, bring up openFileDialog in selected path.
                openFileDialog1.InitialDirectory = folderName;
                openFileDialog1.FileName = null;
                openMenuItem.PerformClick();
            } 
        }
    }
}

// The following example displays an application that provides the ability to 
// open rich text files (rtf) into the RichTextBox. The example demonstrates 
// using the FolderBrowserDialog to set the default directory for opening files.
// The OpenFileDialog class is used to open the file.
import System.*;
import System.Drawing.*;
import System.Windows.Forms.*;
import System.IO.*;

public class FolderBrowserDialogExampleForm extends System.Windows.Forms.Form
{
    private FolderBrowserDialog folderBrowserDialog1;
    private OpenFileDialog openFileDialog1;
    private RichTextBox richTextBox1;
    private MainMenu mainMenu1;
    private MenuItem fileMenuItem, openMenuItem;
    private MenuItem folderMenuItem, closeMenuItem;
    private String openFileName, folderName;
    private boolean fileOpened = false;

    // The main entry point for the application.
    public static void main(String[] args)
    {
        Application.Run(new FolderBrowserDialogExampleForm());
    } //main

    // Constructor.
    public FolderBrowserDialogExampleForm()
    {
        this.mainMenu1 = new System.Windows.Forms.MainMenu();
        this.fileMenuItem = new System.Windows.Forms.MenuItem();
        this.openMenuItem = new System.Windows.Forms.MenuItem();
        this.folderMenuItem = new System.Windows.Forms.MenuItem();
        this.closeMenuItem = new System.Windows.Forms.MenuItem();

        this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
        this.folderBrowserDialog1 = 
            new System.Windows.Forms.FolderBrowserDialog();
        this.richTextBox1 = new System.Windows.Forms.RichTextBox();

        this.mainMenu1.get_MenuItems().Add(this.fileMenuItem);
        this.fileMenuItem.get_MenuItems().AddRange(
            new System.Windows.Forms.MenuItem[] { this.openMenuItem, 
            this.closeMenuItem, this.folderMenuItem });
        this.fileMenuItem.set_Text("File");

        this.openMenuItem.set_Text("Open...");
        this.openMenuItem.add_Click(new System.EventHandler(
            this.openMenuItem_Click));

        this.folderMenuItem.set_Text("Select Directory...");
        this.folderMenuItem.add_Click(new System.EventHandler(
            this.folderMenuItem_Click));

        this.closeMenuItem.set_Text("Close");
        this.closeMenuItem.add_Click(new System.EventHandler(
            this.closeMenuItem_Click));
        this.closeMenuItem.set_Enabled(false);

        this.openFileDialog1.set_DefaultExt("rtf");
        this.openFileDialog1.set_Filter("rtf files (*.rtf)|*.rtf");
        // Set the help text description for the FolderBrowserDialog.
        this.folderBrowserDialog1.set_Description("Select the directory " 
            + "that you want to use as the default.");
        // Do not allow the user to create new files via the 
        // FolderBrowserDialog.
        this.folderBrowserDialog1.set_ShowNewFolderButton(false);
        // Default to the My Documents folder.
        this.folderBrowserDialog1.set_RootFolder(
            Environment.SpecialFolder.Personal);

        this.richTextBox1.set_AcceptsTab(true);
        this.richTextBox1.set_Location(new System.Drawing.Point(8, 8));
        this.richTextBox1.set_Size(new System.Drawing.Size(280, 344));
        this.richTextBox1.set_Anchor(AnchorStyles.Top | AnchorStyles.Left 
            | AnchorStyles.Bottom | AnchorStyles.Right);

        this.set_ClientSize(new System.Drawing.Size(296, 360));
        this.get_Controls().Add(this.richTextBox1);
        this.set_Menu(this.mainMenu1);
        this.set_Text("RTF Document Browser");
    } //FolderBrowserDialogExampleForm

    // Bring up a dialog to open a file.
    private void openMenuItem_Click(Object sender, System.EventArgs e)
    {
        // If a file is not opened, then set the initial directory to the
        // FolderBrowserDialog.SelectedPath value.
        if (!(fileOpened)) {
            openFileDialog1.set_InitialDirectory(
                folderBrowserDialog1.get_SelectedPath());
            openFileDialog1.set_FileName(null);
        }
        // Display the openFile dialog.
        DialogResult result = openFileDialog1.ShowDialog();
        // OK button was pressed.
        if (result.Equals(get_DialogResult().OK)) {
            openFileName = openFileDialog1.get_FileName();
            try {
                // Output the requested file in richTextBox1.
                Stream s = openFileDialog1.OpenFile();
                richTextBox1.LoadFile(s, RichTextBoxStreamType.RichText);
                s.Close();
                fileOpened = true;
            }
            catch (System.Exception exp) {
                MessageBox.Show("An error occurred while attempting to " 
                    + "load the file. The error is:" 
                    + System.Environment.get_NewLine() 
                    + exp.ToString() + System.Environment.get_NewLine());
                fileOpened = false;
            }
            Invalidate();
            closeMenuItem.set_Enabled(fileOpened);
        }
        // Cancel button was pressed.
        else {
            if (result.Equals(get_DialogResult().Cancel)) {
                return;
            }
        }
    } //openMenuItem_Click

    // Close the current file.
    private void closeMenuItem_Click(Object sender, System.EventArgs e)
    {
        richTextBox1.set_Text("");
        fileOpened = false;
        closeMenuItem.set_Enabled(false);
    } //closeMenuItem_Click

    // Bring up a dialog to chose a folder path in which to open or save a file.
    private void folderMenuItem_Click(Object sender, System.EventArgs e)
    {
        // Show the FolderBrowserDialog.
        DialogResult result = folderBrowserDialog1.ShowDialog();
        if (result.Equals(get_DialogResult().OK)) {
            folderName = folderBrowserDialog1.get_SelectedPath();
            if (!(fileOpened)) {
                // No file is opened, bring up openFileDialog in selected path.
                openFileDialog1.set_InitialDirectory(folderName);
                openFileDialog1.set_FileName(null);
                openMenuItem.PerformClick();
            }
        }
    } //folderMenuItem_Click
} //FolderBrowserDialogExampleForm

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1
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